Box



J. H. CARSON Feb. 27, 1940.

BOX

Filed Aug. 8, 1938 2 Sheets-Sheet 1 W A ll|| 2 1 fwuew 307 K 19077, 5% .442 20 rwys' Feb. 27, 1940. J, H, ARSON 2,191,517

BOX

Filed Aug. 8, 1938 2 Sheets-Sheet 2 J77V677Z'07 John /7 60725077 Patented Feb. 27, 1940 UNITED STATES PATENT OFICE 4 BOX John E. Carson, Marion, Ind. Application August 8, 1938, Serial No. 223,640

7 Claims.

This invention relates to boxes and particularly to a structure permitting a box to be formed from two pieces of material in a manner which will reenforce the box edges and corners to give an extremely rigid structure resisting tendency to crush it to a great degree. The structure forming the invention lends itself to the formation of a moisture-proof receptacle as well as to ready display of the contents, windows being formed as desired in any of the walls over a considerable area since there are no flaps or tongues required.

A further advantage of the invention lies in the fact that there is no waste or scrap material in forming the two members entering into the box structure. The structure lends itself to automatic machine operation both in filling and setting up and gluing or otherwise securing the two members together.

These and many other objects and advantages of the invention will become apparent to those versed in'the art in the following description of one particular form of the invention as illustrated in the accompanying drawings, in which Fig. 1 is an inside plan view of the/blank forming the top and two end walls of a box embodying the invention;

Fig. 2, an edge elevation of the blank;

Fig. 3, a top plan view of the blank forming the bottom and end walls of the box;

Fig. 4, an edge elevation of the bottom blank;

Fig. 5, a view in perspective of the two box members in exploded relation;

Fig. 6, a similar view "in perspective with the two members in assembled position; and

Fig. 7, a detail in section of a modified form of corner joint. Y I

Like characters of reference indicate like parts throughout the various views in the drawings.

In the form of the invention herein shown, reference will be made to the use of fiber board as the material used although the invention is not limited to any particular material.

A piece of cardboard l0, Fig. 3, is formed to be generally rectangular in shape and preferably provided with fold lines and II, the respective lines being equally spaced from the outer ends of the blank l and in parallel relation therewith. These lines may be formed by pressing the blank thereacross or scoring it as may be preferable. While not necessarily so, the corners of the blank may be cut oil diagonally as indicated by the character A, but such formation is merely for.

the sake of appearance and does not affect the structure. I

Where the box is required to be substantially moisture-proof, it may be treated in any of the usual methods, but where the box is to employ windows in order to display the box contents, the inside of the blank Hlis lined with atransparent sheet such as a viscose sheet generally termed Cellophane". In the particular form shown, this transparent sheet l3 terminates short of the marginal edges of the blank l0. Before applying the transparent sheet I3, the blank I 0 may be formed to include any style of window desired in each of the two end portions l4 and IS, the windows I6 herein shown being roughly elliptical in shape.

The other piece of the box consists of the originally flat blank l1, Fig. 1, formed to have the fold lines It and I9 spaced inwardly from the ends of the blank a distance corresponding to the spacing of the lines I l and I! on the blank Ill. The marginal outline of the blank I! and also its area are exact counterparts of the blank Hi.

This top-forming blank I! is likewise covered on its inside surface (top side in Fig. l) by a moisture-proof, transparent sheet ill, such as the Cellophane above indicated. This sheet 20 likewise terminates before reaching the marginal edges about the blank H. The blank 81, when windows are desired, has such windows cut through the blank before the application of the sheet 20. In the form indicated, the blank is provided with a major circular window 2! in the central top portion and the two end windows 22 one in each end portion.

The marginal edges of the blank ll, which were indicated above as not being covered by the transparent sheet 20, serve as securing flanges. As indicated in Fig. 5, the blank Ill has its end portions I l and i folded upwardly along the re- I spective lines it and I2. This forms the bottom end of the end piece 23 is turned outwardly I horizontally from the downturned end 23. The side portions 26 and 21 are turned outwardly at right angles to the end 23. These marginal portions are cut through on the fold line l8 to the lines on which the flanges are turned from the end 23.

The side portions of the central portion of the blank I! which forms the top of the box are folded to extend vertically upwardly and are vdesignated by the numerals 28 and 29. The marginal portions of-the other end 24 are likewise turned outwardly therefrom. The blank I! thus folded as indicated in Fig. 515 dropped down over the folded blank, 10 to have the various flanges,

of the top blank ll come into contact with the floor of the blank It and the inside faces of the upturned ends it and i5 about their marginal portions. A suitable adhesive is carried on these flanges or is applied thereto as the two blanks are placed together so that these flanges then may be pressed against the respective parts of the blank ill to completely seal the box, one piece to the other.

The inside moisture-proof sheets 53 and 20 have their marginal edges coinciding along the junctions of the inside fold lines of the various flanges. However, when preferred, these coating sheets may be carried entirely to the outer edges of the two parts and the joint formed, as shown in Fig. '7, to have the two sheets intervening in the securing joint between the flange of the top blank ll and the opposite part of the lower blank l0.

It is to be noted that in forming the box in this manner, the top and two end walls are spaced inwardly from the marginal edges of the side walls by reason of the formation of the flanges from the blank IT. This construction leaves a marginal projecting rib entirely around the side walls and top of the box. The presence of this rib serves to reenforce the box and prevent bending or caving in of the box, and further provides spacing means when the boxes are to be stacked. This spacing is particularly desirable when the box is to be used to package cakes or pastry and an air circulation externally of the box is desired. Furthermore it is to be noted that since the juncture of the two parts is made entirely along the marginal portions of the blanks, there are no internally extending flaps or tongues that would otherwise obscure windows or openings in the box walls. Therefore, by reason of the absence of such parts and also by reason of the extreme reenforcing of the corners, it is possible to form windows in the box walls of considerable area without sacrificing strength of the box.

Incidentally the blanks may be formed by very simple dies and the machinery required for setting up the boxes automatically is likewise simplified so that there may be a great reduction in cost effected by the use of this invention as compared with the use of other multiform structures heretofore employed.

While I have herein shown and described my invention in the one best form as now known to' me, it is obvious that this structure may be varied considerably without departing from the spirit of the invention, and I, therefore, do not desire to be limited to that precise form beyond the limitations as may be imposed by the following claims.

I claim:

1. A box formed of two blanks to have top and bottom portions, intervening side and end walls, one set of said walls being set back inwardly from the marginal edges of the walls of the other set, and flanges extending outwardly from the walls of said set-back set along the walls of said other set and secured thereto, one of said portions also being spaced inwardly from the edges of the intervening walls, and flanges extending from said one portion outwardly on two of the intervening walls and secured thereto.

2. A box formed from two blanks each having end portions folded therefrom, one blank being inverted in spaced relation over the other to have the end portions of one blank enter between the vertical edges of the end portions-of the other whereby those portions form sidewalls of the the side and the end portions of one blank carried into contact with the inside faces about the margins of the side and end portions of the other blank and there secured;

3. A box formed from/two blanks each having end portions folded the'efrom, one blank being inverted in spaced relatiign over the other to have the end portions of on blank enter between the vertical edges of the {end portions of the other whereby those portions form side walls of the box, and flanges outturned from the margins of the end portions of one blank carried into contact with the inside faces about the margins of the end portions of the other blank and there secured, and outturned flanges along the marginal edges of said one blank between its end portions contacting and," being secured to the inside faces of the outer end portions of the other blank.

' 4. A box formed of two pieces each substantially U-shaped in section to have the legs of one.

piece enter between and space apart the legs of the other piece, and flanges turned outwardly on the entering legs to contact and be secured to the inside faces of the other legs, said flanges extending from both the side and end edges of said entering legs, the end flanges extending outwardly on the inside face of said other piece between its legs.

5. A box formed of two pieces each substantially U-shaped in section to have the legs of one piece enter between and space apart the legs of the other piece, and flanges turned outwardly on the entering legsto contact and be secured to the inside faces of the other legs, said flanges extending from both the side and end edges of said entering legs, the end flanges extending outwardly on the inside face of said other piece between its legs, said one piece also having an outturned flange on each side between its legs to extend outwardly on the inside face of the legs of said other piece, the inside surfaces of both of said pieces being moisture-proof.

6. A box formed of two pieces each substantially U-shaped in section to have the legs of one piece enter between and space apart the legs of the other piece, and flanges turned outwardly on the entering legs to contact and be secured ,to the inside faces of the other legs, said flanges extending from both the side and end edges of said entering legs, the end flanges extending outwardly on the inside face of said other piece between its legs, said one piece also having an outturned flange on each side between its legs to extend outwardly onthe inside face of the legs of said other piece, the inside surfaces of both of said pieces being moisture-proof, said moistureproof surfaces terminating marginally inside of said flanges.

7. A box formed of two pieces each substantially U-sha-ped in section to have the legs of one piece enter between and space apart the legs of the other piece, and flanges turned outwardly on the entering legs to contact and be secured to the inside faces of the other legs, said flanges extending from both the side and end edges of said entering legs, the end flanges extending outwardly on the inside face of said other piece betweenits legs, said one piece also having an outbox, and flanges outturned from the margins of 7 turned flange on .each side between its legs to extend outwardly on the inside face of the legs of said other piece, the inside surfaces of both of said pieces being moisture-proof, said moisture-proof surfaces extending under said flanges.

J OHN H. CARSON. 

